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Hydroboost

Discussion in 'The Garage' started by mudjunkie 82, Apr 17, 2005.

  1. mudjunkie 82

    mudjunkie 82 1 ton status GMOTM Winner

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    cannot get this damn thing to work right, Bleed the lines several times, sometimes the brakes will work, other times they will not???? master cylinder is new, Any Suggestions for setting Hydroboost up??????
     
  2. kyser_soze

    kyser_soze 1/2 ton status

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    Did you look into reseting the Prssure differential valve?
    Or did you start bleeding at the furthest most bleeder valve, passenger rear, driver rear, passenger, driver, in that order?
     
  3. dark eternal

    dark eternal Registered Member

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    did you bench bleed the MC
     
  4. Pookster

    Pookster 1/2 ton status

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    Hydroboost does not need any special bleeding functions. Its autopurging into the Power steering supply. If your having trouble, it might be something else.
     
  5. mudjunkie 82

    mudjunkie 82 1 ton status GMOTM Winner

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    tried that,bleed and pedal still goes to the floor??????? :confused:
     
  6. mojo-jojo

    mojo-jojo 1/2 ton status

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    Are you using all the hydroboost parts. I'm doing the same thing to my sub. When I had all the parts out and ready to go back in I noticed that the brake pedal arm and actuator rod for the hydro are specific to that set up, the hole for the rod was in a different spot. Just a thought.
     
  7. rdn2blazer

    rdn2blazer 1 ton status Premium Member

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    i dont have hydroboost, but when i did a rear disc brake conv. on my 70' truck i put a rebuilt master on that was large capasity for disc brakes,and could not get peddle for nothing. i bench blead the master, used a power bleeder you name it, nothing worked. than a buddy that has a street rod shop said throw that rebuilt master away and buy a new one, said rebuilts are junk, when for a few bucks more you can get a new one. sure enough that was the problem, got peddle easy has worked great ever since. my buddy couldnt show me proof it was bad, he just said "trust me". he just had that same problem on several rods they did conversions on, hydroboost and brakebooster type systems. he stoped buying rebuilts and there problem was solved. hope that might help.
     
  8. Eric M.

    Eric M. 1/2 ton status

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  9. sweetk30

    sweetk30 professional hooker Premium Member

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    there is in the gm service book. its for getting the air out when the system is opened up.

    and when i changed over from vac brakes to hydro the pedel setup was o.k. on my truck. just get all the parts like the hoses and the pump.
     
  10. Pookster

    Pookster 1/2 ton status

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    I might be wrong, but I believe the procedure was something like add fluid, hit brakes, turn wheel, etc etc add more fluid- Basically its the same as trying to bleed a power steering pump!
     
  11. JK5

    JK5 1/2 ton status GMOTM Winner

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    That's NOT an autozone crap master...is it???
    I had a problem...with one of there junk masters...a year ago. :mad:

    Good to see that you got that rig moving. :cool1:
     

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